Aggregator pick list

[deads2k]

List of pulls that need to picked to have a "standard" aggregator in front of our API server.

• add local option to APIService kubernetes/kubernetes#42801
• allow fallthrough handling from go-restful routes kubernetes/kubernetes#42886
• rewire aggregation handling chain to be normal kubernetes/kubernetes#42900
• add controller to autoregister APIServices kubernetes/kubernetes#42732
• use separate scheme to serve the kube-aggregator kubernetes/kubernetes#42672
• Create controller to auto register TPRs with the aggregator kubernetes/kubernetes#43141
• allow combining API servers kubernetes/kubernetes#43076
• break kube-apiserver start into stages kubernetes/kubernetes#43149
• don't start controllers against unhealthy master kubernetes/kubernetes#43226
• start informers as a post-start-hook kubernetes/kubernetes#43144
• combine kube-apiserver and kube-aggregator kubernetes/kubernetes#42911
• proxy to IP instead of name, but still use host verification kubernetes/kubernetes#43383